This paper presents the concepts of database systems as well as the overview of the use of Unified Modeling Language (UML) as a standard notation of real-world objects in developing object-oriented design methodology for computer applications. The UML is a tool for specifying software systems that include standardized diagrams to define, illustrate and visually map or model a software system's ...

We present linear-time algorithms to construct tree-like Voronoi diagrams with disconnected regions after the sequence of their faces along an enclosing boundary (or at infinity) is known. We focus on the farthest-segment Voronoi diagram, however, our techniques are also applicable to constructing the order-(k+1) subdivision within an order-k Voronoi region of segments and updating a nearest-ne...

We present linear-time algorithms to construct tree-structured Voronoi diagrams, after the sequence of their regions at infinity or along a given boundary is known. We focus on Voronoi diagrams of line segments, including the farthest-segment Voronoi diagram, the order-(k+1) subdivision within a given order-k Voronoi region, and deleting a segment from a nearest-neighbor diagram. Although tree-...

Originally devised as a notation to capture scenarios during analysis and design, sequence diagrams can also aid understanding of existing software through visualization of execution call traces. Reverse engineered sequence diagrams are typically huge and designing tools to help users cope with the size and complexity of such traces is a major problem. While preprocessing may be necessary to re...

This paper presents a single project experiment on the fault revealing capabilities of test sets that are generated from UML statecharts and sequence diagrams. The results of this experiment show that the statechart test sets do better at revealing unit level faults than the sequence diagram test sets, and the sequence diagram test sets do better at revealing integration level faults than the s...